The frame has interchangeable Switchlock lens technology, so by flipping up the nosepiece, the lower frame swings down and the lens pops out.

The arms are also adjustable, which is great for tailoring the fit to or reducing conflict with a low profile helmet.

The new Prizm lens is truly stunning, the way it highlights the trail in all light conditions has to be seen to be believed, but the problem I have is that it scratches much too easily.

It’s vented, but it sill fogs up in humid conditions, and this means it needs cleaning more often — and that’s when you risk scratching them. Even a tiny spec of dirt rubbed against the lens will leave a mark, and with spare Prizm lenses costing £80, that’s an expensive proposition.